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Ships in Natural Seaways

In: Numerical Methods for Seakeeping Problems

Author

Listed:
  • Bettar Ould el Moctar

    (Technische Universität Berlin, Mechanical Engineering and Transport Systems)

  • Thomas E. Schellin
  • Heinrich Söding

Abstract

This chapter starts with describing statistics of Gauß processes, which result from linear responses to a linearized stationary seaway. Then computing the distribution of nonlinear responses to one or several correlated Gauß processes is illustrated for an example. For more general nonlinear cases, simulation cannot be avoided, but this may require excessive time for directly counting the rate with which seldom occurring events like capsizing or extreme loads occur. A technique for reducing the effort of such computations by orders of magnitude is based on the fact that similar wave events occur in seaways of different significant heights with rates differing by known factors. Finally, the superposition of probability distributions for stationary seaways to long-term distributions and the concept of design waves is described.

Suggested Citation

  • Bettar Ould el Moctar & Thomas E. Schellin & Heinrich Söding, 2026. "Ships in Natural Seaways," Springer Books, in: Numerical Methods for Seakeeping Problems, edition 0, chapter 0, pages 275-291, Springer.
    • Handle: RePEc:spr:sprchp:978-3-032-15966-3_16
    DOI: 10.1007/978-3-032-15966-3_16
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